Tong



June 9, 1931.. c. H. LANE ET AL TONG Filed Sept. '7. 1929 3 Sheets-Sheet l INVENTORS GLML, the

M/A H ab? ML N AIToRNEx/s? June 9, 1931. c. H. LANE ET Al.

TONG

Filed Sept. 7, 1929 3 Sheets-Shea?I 2 INVENTORS,

f TTORNEYS June 9,- i931. c. H. LANE ET AL 1,808,959

.TONG

Filed Sept. 7. 19,29 3 sheets-sheet s INVENTORS' W1 wd Patented June 9, 1931 Y UNITED siTA rEs PATENT oFF'lsCiE CHARLES H; LANEAND CHARLES'H. REYNOLDS, OF HOUSTON, TEXAS TONG Application led September 7, 1929. Sr-ial N. 391,094.

Thisinvention relates to new and useful which thejaw is mounted. This jaw has improvements in a tong. the lateral arcuate ribs 11, 11 which ride One object ofthe invention is to provide -an against the arcuate cams 12, disposed on the x apparatus of the character described specially opposite sideslr of" the groove 9. The inner 5 designed to be operated by hydraulic orffluid side of the-jaw 10 has the ratchet teeth 13 55 pressure and provided. particularly for ro` and the outer side thereof is formed with tatingpipe or other similar objects. raclrteeth 111. Attached to=the casing sec-- A- particular object of the invention-is to tion 1 there is a cylinder l-whose outer end p provide a tong of the character described, is closed-and within this cy'linder'fthereis av 10 which is useful in rotating or turning pipe plunger 1G attached to the outer end off the 6U inscrewing the sections thereof together or plungerrod 17. This rod works through in unscrewing and disconnecting saidl sec -v the bearing 18 and its-innerendis formed tions. with a rack member 19 in mesh with thefteet-h VVhile-the tong is specially applicable'wfor 14. Surroundingfsaidrodl' and interposed luse inhandling verticle pipe in awellibore, between the plunger 16 and the bearing ment ,f it=is also capablerof general application and ber 18 there is a strongfcoil spring-20. A' presuse. sure line 21 enters theouter: end of the cylin- Vith the aboveand other 'objects in view, der 15V andLthere--is a relief line 22y leadingv i the-invention has particular relation-to cerfromtheother end'oi" saidcylinder.

tainnovel featuresof construction,'operation In usethe-tongfisusually suspendedliiila 70 and arrangement of'parts, an example ofl horizontal plane-soas-to'be readily secured which is given in this specication and illusabout a vertical' pipe, said tong vbeing protrated in the accompanying drawings, wherevided: with suitable eyes 23'for the attachin ment2 of'l suspending cables or chains thereto.

25- Figure 1 showsea. plan view of one form of In operation, the tong is clamped about the the tong, shown partly in section. pipe as shown and iiuid under pressure is Figure 2 'shows a sectional view taken on applied through the line 21 to force the the line-2-2 of'Figure 1. plunger 16 inwardly in its cylinder; Asthe Figure 3 showsa plan view of another form plungery se moves the-jaw 10 will be moved 3l() of the tong, partly in section. along the cams 12 in to contact with the pipe 8c,

Figure 4 shows a fragmentary sectionalE 8 and will turn the saine apartial rotation view, taken on the line H of Figure-3fwhen the plunger 16 clears the relief line Figure 5 shows aplan'view Voffstill another 22, the pressure will be suddenly relieved in form ofthe tong, partly in section.- the cylinder andthe spring-2O will return ta-kenon the line66 of Figure 5. will carry the'j aw 10 back to its original posi- Referringnow more particulari-ly to the tionand in posit-ion=-toagain engagewith drawings wherein like numerals ofreference and turn the pipe. The pipe 8 is thus rodesignate similar parts ineach ofthe figures` tated by successive partial rotationsfuntil itV Figure 6 shows a vertical sectionalview the plunger 16 toits originalposition and er)V 10 the numerals 1', 2 designatethe sections of isscrewed up into the connecting collar or 9oy the tong casing which are-hinged'together unsc'rewed. atV one end and whose other endsare'formed InFigure Suthefcasingffsections 2&1, 25-a1e with the ycoinciding flanges 3, lV which'fitfto hinged'together and may be secured around gether and one of which has a bolt5` secured the pipe in a manner similar to that shown thereto which is fitted through a bearing in invFigures 1 and 2. The section 24 ofy the 95 the other andis outwardly threaded-to retong has the cylinder 15 connectedr thereto ceive a securing nut 6. The hinge sectionllV and located in this cylinder there is a plunghas inside bearings as 7 adapted to bear er 16 attached to the plunger rod 26. This against the pipe 8 to bel turned and the other plunger rod works through the cylinder and section lfhas an inside `arcuate groove 9 in around it-there is ast-rong coil-springv inter- 100 posed between the plunger 16 and the bean ing 18. In this form the tong casing has the internal annular channel 27 in which the arcuate jaws 28 are mounted to revolve. These jaws when assembled, form, in effect, a continuous sectional ring about the pipe 8 to be turned and each jaw has the lateral ribs 29, 29 which move around in the arcuate grooves or tracks 30, 30 in the adjacent sides of the casing. Each jaw has an outward radial bearing member 31, each member having a deep socket 32 in which is located the coil spring 33 and seated on said spring there is a dog 34 which has the cross pin 35 therethrough whose ends work in radial slots 36, 36 provided on opposite sides of the radial bearing member 31.

In operating this form of tong upon the introduction of duid pressure through the line 21 the piston 16 and rod 26 will be driven inwardly and the inner end of the piston rod 26 will engage against the adjacent dog 34 and impart a partial rotation to the jaws, which being in engagement with the pipe 8, will cause said pipe to rotate correspondingly. During this partial rotation the next succeeding dog 34 will be carried around into position to be engaged by said piston rod 26 upon its next succeeding inward stroke. rlhis next succeeding dog referred to will en` gage said piston rod and be depressed k or forced inwardly thereby and when the piston clears the outlet line 22 the pressure in the cylinder being relieved the spring 2O will carry said piston rod outwardly into its original position and when its free end clears the said next succeeding dog 34, said dog will be suddenly forced outwardly bythe spring 33 in front of the piston rod 26 so that when the piston 16 is again-forced inwardly the jaws 28 will again be partially rotated as above explained. The operation is thus continued until the pipe is screwed into the adjacent coupling or; unscrewed from it.

Referring to the form shown in Figures 5 and 6 the numerals 37, 38 designate the sections of the tong casing which are pivoted together at one end, and whose other ends are 'formed and secured together in a manner similar as shown in Figure 1. rlfhe section 38 has the inside bearings 7 which bear against the pipe 8 as in Figure 1. In this form there is an arcuate pipe engaging jaw 39 which has thelateral arcuate ribs 40, 40

which run in the cam shaped grooves or tracks 41, 41.v 1n this form, the section 37 of the casing has the cylinder 15 attached thereto,

in which is located the piston 16 which is attached to the piston rod 42 who-se inner end works through the bearing 18 and surrounding this piston rod andv interposed between the plunger 16 and the bearing 18 there is a strong coil spring 43. This cylinder has the inlet pressure line 21 and the release line 22 as in the other forms. Pivotally connected to the inner end of the rod 42 there is an anchor 44 which runs in an arcuate track 45 in -the casing section 37. This anchor is connected to the jaw 39 through the instrumentality of a connecting link 46.v When pressure fluid is applied through the inlet line 21 the plunger 16 will be driven inwardly and will operate through the anchor 44 and the link 46 to actuate the jaw 39 which in turn will impart a partial rotation to the pipe S. Vhen the plunger 16 clears the relief line 22 and pressure in the cylinderis relieved the spring 43 will return the plunger and the jaw 39 to their original positions Aand the operation may be repeated until the pipe 8 is screwed up or unscrewed.

The drawings and description disclose what we now consider to be preferred forms of the invention by way of illustration, but it is obvious that structural changes may be made without departing from the principle of the invention as defined by the appended claims.

What we claim is:

1. A tong including a casing formed of sections, means for securing the sections together about a pipe, gripping means in the casing engageable with the pipe therein and adapted to rotate the. pipe, yieldably mounted dogs on said gripping means, means operable by fluid under` pressure and operatively connected with and adapted to impart partial rotations to said gripping means, said fluid pressure operable means including a reciprocable rod engageable successively with said dogs.

2. A tong including a casing formed of sections, means for securing the sections to-- gether about an object to be rotated, a track in the casing, gripping means movable in said track, and adapted to engage and rotate said object yieldably mounted, radial, abut.

ments carried by said gripping means, means operable by iluid, under pressure and engageable successively with said abutments and adapted. to impart successive rotative movements to said gripping means.

3. A tong including va casing, gripping means therein having radial, yieldable dogs, a reciprocable member engageable successive,- lyV with said dogs, to impart lsuccessive partial rotations to said gripping means, means for reciprocating said member, said reciprocating means Vincluding mechanical means for moving said member in one direction and fluid pressure operable means for moving said member in another direction.

4. A tong including a casing, pipe gripping means therein adapted toengage and rotate a pipe yieldable, radial dogs carried by said gripping means, a cylinder associated with the casing, reciprocable means in the cylinder effectiveto successively engage said Vdogs and to impart partial rotations sucles ilo

cessively to the gripping means, means for applying fluid under pressure to the reciprocable means to actuate the same.

5. A tong including a casing, pipe gripping means therein adapted to engage and rotate a pipe yieldable abutments on said gripping means, a. cylinder associated with the casing, reciprocable means in the cylinder effective to successively engage said abutments and to impart partial rotations successively to the gripping means, means for applying fluid under pressure to the reciprocable means to actua-te the same, in one direction, and other means for actuating said reciprocable means in another direction. l

6. A tong including a casing, pipe gripping means thereimcapable of successive partial rotation about the casing and engageable with a pipe in the casing and effective to rotate the pipe, yieldable abutments on said gripping means, actuating means effective to successively engage said abutmeuts and to impart successive rotations to said gripping means and means for applying fluid under pressure to said actuating means to impart successive actuations thereto.

In testimony whereof We have signed our names to this specilication.

CHARLES H. LANE. CHARLES H. REYNOLDS. 

